Fixed issue with shrink output when using system print dialog.

chrome/renderer/print_web_view_helper.h

Index: chrome/renderer/print_web_view_helper.h
===================================================================
--- chrome/renderer/print_web_view_helper.h	(revision 132045)
+++ chrome/renderer/print_web_view_helper.h	(working copy)
@@ -369,6 +369,9 @@
   // the failure came from the browser in the first place.
   bool notify_browser_of_print_failure_;
 
+  // True, when printing from print preview.
+  bool print_for_preview_;
+
   scoped_ptr<PrintMsg_PrintPages_Params> old_print_pages_params_;
 
   // Strings generated by the browser process to be printed as headers and